Dasviper and ventilator for stovepipes



(No Model.)

J. G. COLEMAN.

DAMPER AND VENTILATOR FOB, STOVBPIPES.

No. 557,768. Patented Apr.'7, L896.

Nrrnn STATES i ATENT FFICE.

JOHN G. COLEMAN, OF LENOX, IOlVA.

DAMPER AND VENTJLATOR FOR STOVEPIPES.

SPECIFICATION forming part of Letters Patent No. 557,768, dated April 7, 1896.

Application filed July 12, 1894. Serial No. 517,388 (No model.)

To aZZ whom it may concern:

Be it known that I, JOHN G. COLEMAN, a citizen of the United States of America, residing at Lenox, in the county of Taylor and State of Iowa, have invented a new and usef ul Damper and Ventilator for Stovepipes, of which the following is a specification.

My object is to arrange and combine a ventilator with a damper in a stovepipe in such a manner that the ventilator will be at some distance above the damper and the movable portion thereof outside of the pipe and adapted to swing outward, when the damper is closed, in such a manner that air will be admitted into the pipe to ventilate the room and to aid the damper in checking the fire; and my invention consists in the arrangement and combination of parts, as hereinafter set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which- Figure 1 is a vertical sectional view of a sec tion of stovepipe having my improvements connected therewith, showing the ventilator and check closed and the damper opened, and also showing, by means of dotted lines, the said parts in an opposite position. Fig. 2 shows one of the sheet-metal blanks of which the ventilator and check is formed. Fig. 3 shows a complete ventilator and check ready to be attached to a stovepipe. Fig. 4 is a transverse sectional view through the line a: a: of Fig. 3, and Fig. 5 is a side view of a section of stovepipe and a modified form of ventilator and check.

Referring to the accompanying drawings, the reference-letter A is used to designate a section of cylindrical sheet-metal stovepipe. A designates a damper in the stovepipe, adapted to be operated in a common way by means of a handle on the end of the spindle that supports the damper.

l3 designates a metal plate curved to conform to the shape of the pipe and provided with an opening in its central portion. l3 designates a valve hinged at the top of the said opening and having integral wings B extending inwardly therefrom and in such a manner as to close the space between the sides of the said opening in the plate B and the edges of the valve 13 when the latter is partially opened. These wings serve as guides for the movements of the valve and also keep the opening in the pipe closed at all points excepting at the bottom and deflect air up ward as it enters the opening in the pipe.

0 designates a register or slide in the lower end portion of the valve B to provide means whereby the ventilation of a room may be effected when the damper in the pipe is in an open position without changing the position of the damper.

D designates an arm fixed to the inner face of the valve 13 and extended toward the interior of the pipe. D designates a connecting-rod having a pivotal connection with the damper at D and also with the end of said arm to provide for the isochronous operation of the valve and damper.

In Fig. 5 parts F of the stovepipe are bent outwardly and the valve F is hinged at the top of said opening. This valve has its lower edge bent inwardly to close the space at the bottom of said parts when the valve is closed, and is also provided with wings F to close the space at the side of the valve when the valve is opened, so that an upward draft is obtained. When constructed thus, the register O is placed in the bottom portion.

In practical use the damper and the ventilator and cheek are located with respect to each other in such a manner that when the damper is closed, or nearly so, the ventilator and check is made to assume an open position, and vice versa. By this arrangement when smoke or gases are passing through the pipe or a strong draft is desired the ventilator and check is closed and the damper is opened, and after a room has become heated and ventilation is desired the damper is closed or partially closed and the ventilator and check is opened, thereby creating a draft upwardly through the pipe from the interior of the room, and at the same time aiding in checking the fire.

It is obvious that by locating the ventilator at a distance above the damper and on the outside of the pipe, so as to swing outward, the soot that may fall from a point above the ventilator will pass downward past the ventilator and not escape outward through the opening in the pipe.

I am aware a damper has been placed in bearings connected with a stove and the damper connected with a valve or door in an opena fixed arm extending inward from the top of the valve, and a rod pivotally connected with I 5 the free end of the arm and also connected with the top face of the damper at some distance from the center of the damper, and means for operating the damper, arranged and combined as shown and described for the 20 purposes stated.

JOHN G. COLEMAN.

lVitnesses:

S. H. COLEMAN,

H. E. CRITTENDEN. 

